The Ghadr (Ghadar) was a

The Ghadar Party was a revolutionary association founded in 1913 by expatriate Indians in North America, establishing its headquarters at the Yugantar Ashram in San Francisco to overthrow British rule through armed rebellion. Option (c) is a common distractor because while Indian revolutionaries did operate from Germany via the Berlin Committee, that was a separate entity from the Ghadar movement. The core concept tested is the history and geography of overseas revolutionary organizations during the Indian independence struggle.